Process of producing printing-surfaces and printing-forms.



Nn PRINTING FORMSl RENEWEDJULY18,N1L

Patented Feb. 9, 1915.

E,CORNWALL TWG SURFACES A PR.1i,1a0&

G YRIN PXLED A G EGKGE R. CORNWALL, 0F RYE, NEW YORK, ASSIGNOB.,

BY MESNE ASSIGNMENTS, TO

JAMES G. COFFIN, TRUSTEE- .'SCESS 0F PRODUCING PRINTING-SURFACES iNID PRINTING-FORMS.

specification of Letters rennt.

Patented Feb. 9, 1915.

Application filed ApriilL 1966, Seriai'No. 311,084. Renewed July 18, 1914. Serial No. 851,818.

To mit vzza/'mm it may, concern lie it known thatLGnonon R. COR'NWALL,

e citizen ofy the United States, residing etV Nye, inthe county. of XVestchester and Siete of New Yorkdmsefinvented new amiruseul Improvements injlrooesses of Producing, PrintingSurfaces end.- lPrinting-Forms, of

.whichthe followingise. Specicetiion:-

The invention relates to the printing-exit; and more especially tofthe. production: of:V

printing surfaces.

surfaces.. l

Other objectso the inventionivvill'infpart; be vobvious andi will inpart''appeer or `-be... pn rticularly. pointed: out :in the" specification 1' sind. the claims;

v The invention consistsinthe novel proc; v-esses, andaimprovernentsherein-shown and templgitesthe: use` o describedy The accompeny'ing drawings, referred'tox herein andsforming e part hereof, illustrate f oneweyaof carrying out certain steps of. the

' FigylOl shows the forni after the corrected' processincluded byl the invention.

Of the drawings: Figure 1 illustrateslan impression-receiving surface; Fig. 2 indi-1 cotes a. form comprised of interchangeable composition units inthe form of line bars adapted for use with this invention; Fig.

ngth'ereby'deined by t 1e ace. l f

illustrates one manner of impressifngglines of characters upon-the sensitizedisurfacef of" the bars. Fig. 4 illustrates the impressing pose on making desired changes, such v as corrections; miditions, eliminations, or tre'nspositions; .ofthe seid units in order to bring;

of lines of characters upon light-sensitive line bars by artificial light;Fig.-'5 showsa:

'form of interchangeable composition units, said units being. in. the forin of 11i-lebens@i ner of impressing linesof characters 'fronrfa form composed of line barsupon avplat-by and impressions being taken therefrom for proof-residing' or other purposes; Fig. 8i

shows `gfproof sheet with an indicated cor# rection; Fig. 9 shows a corrected line ber;

' hun has Abeen substituted for'the incorrect bar" Fi". 11 showsI one mannen of irnpressing' lines' of characters from a form= composed of line bers upon a plate-'bythe action of ligliti and illustrates furthefrthe tempntes.' the use: off.. composition-A tion. by

. In! otiienaepects of the invention compomaking-:of wpermanent. printing plate after the. desired.- changes have been made in the form-end Fig. face or printing plate.

The invention contempletes'- produ@- ing of.' printing surfacesforj lettevpress rn-stter by mee-ns of.l interchangeable-'composltionagunits which are adapted-1 ducuig aiprintingsunfwce yby th use-off'suohfecting printing' or impressing* functhoreovtionv of lightV generally. f

eitioxiy nnits'yef/recontemplated of light'- tiensmittingi matexaL-endl which 'bear one o rmole ,characters upon a. surface, the charactas. and ther surrounding surface posthemnsiiiissionnof llgh the' characters-be'- .ses'siiigfdiferenb properieswith respect :to

surrounding surthscomposedl matter into the desired al form.

: According izo-one feature of the linvention it iscontemplated furthermore t0. use line bers o :my cli racter whatsoever; i l'iyf tli'is lncertanoitsnesfpects the invention compositionl ef- 12- illustrates a printing surfeature of the inventionthe=-imposition of the iines of' characters upon; the Enel-hers f.

by theactipn off/light'y being contemplfd 'I Whether thi 'bor/itself 'obtains its' prlifrtiiigv -or impressing function by the action 'fof ,1105. g aceompenying drawings which, lesl jvhereinloeioneindicated;.illustrate onemaxmen of -calLm-.yfingout certain Y stepsof the invention'- as being primarily impressed in a series of justified lines of characters upon an impression-receiving surface l, which surface 1n certain aspects of the invention may bepof any lnature but in certain other aspects is of a light-transmitting nature, the characters being placed lthereon in an opaque or light-arresting' medium, such for instance as an opaque ink. Itjwill be found that certain papers are ofsuiiiciently uniform texturc and transmit light/sufficiently freely and uniformly to actl as the impression-receiving surfacealthough 'other suitable irnpression-receiving slirfaces may be used. A seares of composition units which, as previously stated, are herein shown as line composition units or line bars, are assembled into a form 2. Prior to the assembling of the bars into the orm,`or subsequent to such assembling, as may be found desirable or", convenient, the surfaces of the bars'ze,` sensitized in asuit-- able manner soas to adapt'them to receive an imprint or impression by the action of light. This may be done, for instance, by applying a sensitive coating to the surface of the bars containing a light-sensitive agent, such as a silver salt, a cliromic salt, or sensitive asphalt, or other suitable agent of the re uired nature. For convenience inholding t 'e'form of line bars together suitable holding means are provided, a form thereof being herein shown as comprising av chase 3. The chase is further shown as provided with suitable means for engaging, holding and releasing the line bars, the illustrated form of such means being indicated generally by the reference numeral 4. While, according to certain features of the invention, the line bars may be of various kinds or natures, according to other features of the invention, asv previously indicated, it is Acontemplated to use line ars oa lighttransmitting' material, such as glass, or other suitable material. It is desirable to position the ression-receiving surface l and theorm o line bars so that .each line of vcharacters upon the surface 1 will 'be placed in definite relation to a line bar and l the different lines of characters will 'be 4transferred or impressed. upon their correthe mattei-,upon the final printing surface,

,B5 to each line of characters upon theim'pres- 4- spondingf line bars .in definite. relation in order to produce a uniform arrangement of as .well 'as for other purposes. 'To accomplish this end, suitableregistering devices are provided in' connectibn with the im ression-receiving surfaclif, wand the form o line together to effect the desiredfunction as ave set forth. As illustrated the drawings such re `s tering means are`shown in definite relation sion-receiving surface and also` in deinite relation to the composition units in the form. The said registering means are further shown upon the impression-receiving surface l in definite relation to each end of each line of the justified lines of characters carried upon the said impressionreceiving surface, and de vices for coperating therewith are shown as being in detinite relation to each end of each of the liuc bars, although it Will be understood that in certain-aspects of the invention any suitable registering means may be employed. As illustrated herein the registering means carried by the impressionfreceiving surface 1 consist oi perforutions/ and the particular form of coperating registering devices which are in definite rela-tion to the line bar as shown as pins 6 carried by the chase 3. It Will now be obvious that if the impression-receiving surface l be imposed upon the surfaceof the form of line bars :2 that the perforatins 5 passing over the pins 6 will bring each line of characters into denite relation to a line bar in the form. Any suitable means for causing the light to act upon the said surfaces so as to impress the lines of characters carried by the impression-receiving surface 1 upon the linebars of the form 2 may be employed and in Fig. 4: of Ihe.drawings a source 7 of artificial light is shown as being employedv l'or this urpose.

After the light has acted uponthe sensitive surface of the form of bars 2, the bars are then developed, the developing process being of a nature-corresponding to the Senf. Asitizing agent used upon the surface of the .A bars. -Vith a surface sensitized by one of'. l 16E the' silver salts many different. developers lmay be used which are'well known in thev art; with a chromated colloid it is custom` ary to develop with either ,ivarm or cold water,depending upon the .results which itis desired to effect; and with sensitive asphalt it ifsy common to develop with turpentine.

light. As shown in the said gure, the characters have remained light transmitting and the surrounding surface has been made light arresting. V p

It is contemplated by the'inventiomwith linebars, or other `composition' units,that

eiiect the printing .or impressing function byltheactionvof light,` to Vsensitize a -`unitary platein order tosecure a printing surface iso 'from the line hars by of proof will be understood that the surface ot the action, o r light upon the sensitive surface of the plate. lt is generally found in practical work, how eter, that considerable change is necessary in letter-press oompoeed matter before it is iu the deeire'd tinal form and it is desirable to malte all these changes before the linnl printing surface is secured. With this ob-. ject in view the present invention. contemplates as one ot its features providing proo sheets wherein corrections and Such other changes as it may he desired to make may be indicated, and the line bars or other conv position units may then be changed so ae to bring the composed matter into the de sired linal forni prior to the production o the final printing:v surface. lf desired, the proofs vma;v be taken upon a sensitive paper direct from the tori' 3, but in pmctieal work. if desired, a plate may be provided, which nini' be styled the lempornrj," plate,- 'from which a in'actieallv unlimited niunber iiii,iie.f.sioiis may be pulled. ootntlinggly, eertain features of the invention contemplate the securing oi proof irnpisesn sions and effoording to certain further tea- 'tures ol" the invention tho securing' o* e temporary plate which may be inked and proof impressions upon ordinary. paper in printers ink secured therefrom is contenipleted. -ne manner of carrying out 1h a. series olq steps is shown in the thawinge.

'lig. t3 of the drawings may he teilten to illustrate the iinpnessing of the mnuposml matter carried )y the lorui of har' 3 upon any suitable eurlaoe, whether ot r paper for prooi siioetf. direct. or e plate which to be used as; :i trniporary proo'f'plate. or a inal unitary pi inting plate. The chase f5 is shown an placed in yiuxta- ,position to a source of artificial light i' and vharing: a plate S in Contact therewith. t the plate 8 will be sensitized in a` suitable Inanner, as in one of the Ways horeinbotore set forth. The plate 8 iii-.rv then be ilereloped and otherwise prepared iu :i suitahle man nor, inked and prout impressions 9 taken therefrom in. any desired number. s illustrating" one operation freiurntly nwessariv in bringing the composed metter into the desired final torni, the sheet 9 is shown usi containing a typographical error, indicated thereon in suitable manner at the point l0. The corresponding line bar in the forni il, see Fig. 5, is indicated by the reference numeral ll. A new line har 12 will be runde, which may be made substantiall57 as above set forth, in uhirh the error has been eliminated, and the said imiis then suhstituted for or interohanged with the bar ll `in the forni The said Corrected hars may be produced in series :is will :is the origina composition, when u sulliriont number o changes are made, sind (hangt-is other than corrections, suoli as additions, transpositions, or eliminations ot mutter, can be made .in substantially the saine manner in the .torni of bans in order to hriupf the composed matter into the` desired final torni.

ln Fig. l0 ot' the drawings the chase iis shown with, the oorrect bar 1.2 substituir-d for the incorre'it bur ll therein. The forni of hars, new carrying the matter in the de sii-ed fixuil torni, is used to imprese a printine, plate in rder to secure the final printing surface esiied. According to certain features of the invention it is contemplated to produce the tinal printing plate by the nation. oi light. A suitable printing plate, surh the plate lf, which may be o meta or other suitable substance, is provided, and the surface thereof sensitize Said sensi tiziml may be carried out in one of the ways: above describe-tl in ronnecti on with the "sensi lizing; of the eur'taee oi' the bers, or in auf1 other suitable way. There the said platoy 115 is intended for providing a. pinuographitprinting surface., it generally ot vine or alutnini'un, the surnee of which hass received suitable preliminary treatment, as h v graining, although a .fitoneeoulfl be used, it ilesired. s shown in ug. lll of the drin'- ings. the plate i3 is subierted 'to the :mtu-.n

4of light troni the sourro T through the itare oilfhe bars in tho i'orui w. The sui-'tare oi' the plate is ihen (hielt/43ml, and thif` nin?! hr lontin substantially thi` manner set forth uhm-e in oonueetion with the developing olf the surface of the z'rlauographio line bars. or any other suitable manner, and the snrhire of' the plate is, then prepared for print- `With a plfznographio plate this in dono oft olrhinfz, ,e'unining and rolling up vwith ink` in n 'u'eltltnoicu manner.

From :ill ihe foregoing it will be understood that n nmol unil useful method of produring n printing surface has been provided and a novel and uselul printing, form has also been provided which realize the objects of invention and Iadvantage@ herein set forth. together with ether objects and atvantuges. l

The invention, inits broader aspects, is not limited to the pnrtioular manner of ein# ri'ingz out the steps omuprised in the method. nor to the partioulnr elnl'mdiinent of the printing forni, as, rfiriations mayi be madre in ythese TWithout departing: from the principles of the invention.' f

VVhatI do claim ns my invention and dt:- sire to Secure by Letters Patent, is:

1. The process of producing a letter-press printing plate which enprises planing" a line ot cliaraotors upon an impression-recoiving surf-ae... planing.' a registering niark in definite relation to the said line, SentitiaiiiIr the surtaee of a line bar, positioning the line of Chametere with rotore-.noe to the line ingr.

'har by menne of said registering marit, im-

pressing the line of characters upon the son sitized surface of the `line bar, and developing the said surface ofthe line har.

2. The process of producing a letter-press printing plate which comprises placing a series of justified lines cf characters upon an impression-receiving surface, sensitizing the surface of a plurality7 of line bars, assembling the said bars into a forni, bringing the said impressioli-receiving surface and the form of line bars into such relative'position that each line of characters upon the impression-receiving surface will be in register with a line har in the said form, imn pressing the lines of characters upon the sensitized surface of the hars, and developing the said surface of the hars.

3, The process of producing a lettexpress printing plate which comprises placing a series of justified, lilies of characters upon an impression-receiving surface, sensitizing the surface of a plurality of line hars, assembling the said hars into a form, bringingthe said in'ipression-receiring surface and the forni of line hars into such relative position that each line of characters upon the impression-receiving surface will he in register With a line har in said form, impressing the lines of characters upon the sensitized surface of the bars by the action of light, and developing the said surface of the bars,

4. The process of producing a letter-press `printing plate which comprises placing a series of justilied lines of characters upon an impression-receiving suiface, sensitizing the surface of a plurality of line hars, semhling the said bars into a form, bringing the said impression-receiving surface and the form of line 'oars into such relative position that each line of characters upon the impression-receiving surface will be in register with a line bar in the said form, impressing the lines of characters upon the sensitized surface of the bars by the action of iight. developing the said surface of the hars, preparing the surface of a unitary printing; plate so that it will be in condition to he impressed hy the said line hars, and thea in'ipressing the lines of characters from the said line hars upon the surface of the printing plate.

5. The process of producing a letter-press printingr plate which comprises placing a series of justified lines of characters upon an im'pression-receiving surface, sensitizing the surface of a plurality of line hars, assembling the said hars into a form bringin;r the said impression-receiving surface and the form of line bars into such rdlatirc positiori that each lino of characters upon the iniprcssion-receiving surface will he in register with a line har in vthe said form, 1hapressing the lines of characters upon the sensitized surface of the bars hy the action' of lightdeveloping the said surface of the bars, sensitizing the surface of a unitary planographic printing plate, and impressing the lines of characters from the said hars upon the said plate by the action of iight-n 6. The process `of producing a letter-press planographic printing plate which coniprises placing a series of justified lines of characters upon an impression-remiving surface, sensitizing the surface of a plurality of line bars, assembling the said hars into a forni, bringing the said impression-receiving surface and the form of line hars into such relative position that each line of characters upon the impression-receiving surface `iill he in register with a line bar in the said form, impressing the lines of characters upon the sensitized surface of vthe hars by the action of light, developing the said surface of the bars, sensitizing the surface of a unitary planographic printing plat/e, inipressing the lines of characters from the said oars vupon the said plate hy the action of light, and preparing the said plate for printing plauographically.

7. The process of producing a letter-press printing surface which comprises placing a series of lines of characters upon an i1npressionwecciiing surface, sensitizing the surface of a plurality of line hars, essere.u bling the said. hars into a forrmbringing the impressionreceiving surface and the. forni of line bars into such relative position that each line of characters upon the impressionreceiving` surface will he in register with a line bar in the said form, iiniiressing a line of characters upon the sensitized surface of the hars by the action of light. developing the said surface of the hars, making a proof ,impression from the said bars, and malfriug.;vv printing plate from the said hars.

8; The process oflproducing a letter-pre 's printing surface which con'iprises placing: series of lines of characters upon an impr siorfreceiving surface, sensitxing the face of a plurality of line harsn assemh the said hars into a form. bringing; the pressionweceiving surface and the line hars into such relative p irri"` form of on that each line of characters upon the impressionreceiving` surface will he in register with a line har in the said form, irnifressing a line of characters upon the sensi izied surface of the hars by the action of liwht, developing the said surface, of the hars, making e tem porary printing plate from said bars, taking proof impressions from said temporary printing plate, making such changes as may be desired to bring the composed matter carried by the said bars into the desired final forni. sensitizing the surface of a unitary printing plate, transferring the lines' of characters from the said form of bars to the printing plate, and developing the printing plate.

The process of producing a letter-press ii oi nimm :ters constituting eoiiiposiii )imiter in dein te reiiition upon ilus bars by Hiv :action or iiz'ug making siiii'i changes by revim: or otherwise in such .line 17; i nel' .ir- V to orina the com 'mio the desired fins-i form, *i 'fioiers ii-oni the said f piste, und preparing said p uiting m, 'ii' nroeem oi producing a letter press painting; surface which comprises pine ii i vimriicfieis constituting ccm- @ioscii matter iii. fieinie relation upon line slrs ipv iin action of iifii, in such. nimmer :is to 'fij'iufr the ciiiirzu r-oeuring surface otr transmitting :ind iiffift :time the characters in -im-r, se sitising ze, unienfi Lrnnsterrin iii@ said iiiie 'ic/(irs to fiction of iiyiit, producing; ii

'zimng ihr: surface oi n `sfffriiig ilie Eines of rii iinc ours to tiie sun in; iw anton, of iight, i?, .miste 'for priming.

e i' iin" i :d preparing me ij. The process :ring letteri-ining sur ici] uoin'xiises :si-minimi' into :i Tiri iz giuridici oi @iis herkeuring composition n make impr ssions by tire ffuftwiof iight in such order; to representy a nipositiozfi., milking .fi prim? impression fron the saifi forni, masinff such changes in the composition uiiifs as may be desired to 'bring the composed matter into its inal form, sensr tizing the surface of a printing plate, im-

ing the composed matter from the said te --iiosring units upon the sui-finie of the pi? .e ny the fiction of iight, developing the surface of the piste, and preparing the some for printing.,

.13. The process of producing a. letterpress printing piste which comprises placing :i line of characters upon an impressionreceiving surfni-e, placing :i registering (ie-- vice in definite reiation thereto, sensitizing :i ine bar. piaciug said line bar and a registering device in definite relation, bringing the Ytine of characters and the line bar into register by means of said registering de- Vicesy and impressing the lline of characters upon the surface of the bar by the action of iight.

The process of producing a. lettere printing piste which eomprises place. Ein-o ot cinimctersiupon :in impressionreceiving surface, placing a, registering de-A vice (if inite relation thereto, sensitizing e. coing'iosition unitn placing said composition unit. and. n. registering device in definite reiiiion, bringing the iin@ of characters and the composition unit into register by means oi said registering devices. and impressing the iins of {stimule-.ters upon the surface of the iosiiioii unit by the action of iight.

'In testimony whereof I have signed my immo 'o inis sooei itfion in the presence of tivo si ibs( witnesses.

CURNVALL.

Il GPBGE R. Witnesses F. C, LUCAS,

CLARA Piiinmrs. 

